Physics Question

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
icon
Related questions
Question
100%

answer choices on the second screenshot

Two trucks travel at constant velocities until they collide. The truck on the right has a mass of 1000 kg and a speed of 3 m/s, and the moving van on the left has a mass of 8000 kg and a speed of 4 m/s. Three physics students are discussing the moment the trucks collide, and each makes a claim about the forces on each truck.

- **Student 1**: I think that the truck will get hit harder than the moving van. Since the moving van has a bigger mass, the truck will also have a higher acceleration.
  
- **Student 2**: The moving van will feel a greater force than the smaller truck. Since the moving van was moving faster originally, it will have a higher acceleration.
  
- **Student 3**: Both the truck and the moving van will be hit with the same force. Since the truck has a smaller mass, it will experience a larger acceleration.

**Question**: Which of the following identifies a mistake in one of the students’ claims and explains why it is incorrect?

**Diagram Explanation**: The diagram shows a larger moving van on the left moving towards a smaller truck on the right. Both vehicles are on a straight path toward each other, indicating a potential collision scenario.

**Analysis**: 

- According to Newton’s Third Law of Motion, when two objects collide, they exert equal and opposite forces on each other. Thus, Student 3 correctly identifies that the forces on the truck and the moving van will be equal in magnitude.
  
- Student 1 incorrectly claims that the truck will get hit harder and also confuses the relationship between mass and acceleration.
  
- Student 2 incorrectly asserts that the moving van will feel a greater force due to its higher speed, confusing speed with the experienced force, which is actually equal for both vehicles. 

The mistake lies in Student 1 and Student 2’s understanding of the forces involved.
Transcribed Image Text:Two trucks travel at constant velocities until they collide. The truck on the right has a mass of 1000 kg and a speed of 3 m/s, and the moving van on the left has a mass of 8000 kg and a speed of 4 m/s. Three physics students are discussing the moment the trucks collide, and each makes a claim about the forces on each truck. - **Student 1**: I think that the truck will get hit harder than the moving van. Since the moving van has a bigger mass, the truck will also have a higher acceleration. - **Student 2**: The moving van will feel a greater force than the smaller truck. Since the moving van was moving faster originally, it will have a higher acceleration. - **Student 3**: Both the truck and the moving van will be hit with the same force. Since the truck has a smaller mass, it will experience a larger acceleration. **Question**: Which of the following identifies a mistake in one of the students’ claims and explains why it is incorrect? **Diagram Explanation**: The diagram shows a larger moving van on the left moving towards a smaller truck on the right. Both vehicles are on a straight path toward each other, indicating a potential collision scenario. **Analysis**: - According to Newton’s Third Law of Motion, when two objects collide, they exert equal and opposite forces on each other. Thus, Student 3 correctly identifies that the forces on the truck and the moving van will be equal in magnitude. - Student 1 incorrectly claims that the truck will get hit harder and also confuses the relationship between mass and acceleration. - Student 2 incorrectly asserts that the moving van will feel a greater force due to its higher speed, confusing speed with the experienced force, which is actually equal for both vehicles. The mistake lies in Student 1 and Student 2’s understanding of the forces involved.
**Question:**

Which of the following identifies a mistake in one of the students’ claims and explains why it is incorrect?

**Options:**

1) Student 1 is incorrect because a larger mass will always have a smaller acceleration.

2) Student 2 is incorrect because both trucks will experience the same amount of force.

3) Student 3 is incorrect because Newton’s third law tells us that both trucks must experience equal force and equal acceleration.

4) All of the students are incorrect because collisions have to do with momentum, not forces or acceleration.

**Explanation:**

The correct answer is option 3, highlighted in blue. It states that student 3 is incorrect because Newton’s third law tells us that both trucks must experience equal force and equal acceleration. The explanation implies a misunderstanding related to the application of Newton's third law, which states that for every action, there is an equal and opposite reaction. However, the explanation provided in option 3 incorrectly interprets this law concerning acceleration, which depends on both force and mass according to Newton's second law.
Transcribed Image Text:**Question:** Which of the following identifies a mistake in one of the students’ claims and explains why it is incorrect? **Options:** 1) Student 1 is incorrect because a larger mass will always have a smaller acceleration. 2) Student 2 is incorrect because both trucks will experience the same amount of force. 3) Student 3 is incorrect because Newton’s third law tells us that both trucks must experience equal force and equal acceleration. 4) All of the students are incorrect because collisions have to do with momentum, not forces or acceleration. **Explanation:** The correct answer is option 3, highlighted in blue. It states that student 3 is incorrect because Newton’s third law tells us that both trucks must experience equal force and equal acceleration. The explanation implies a misunderstanding related to the application of Newton's third law, which states that for every action, there is an equal and opposite reaction. However, the explanation provided in option 3 incorrectly interprets this law concerning acceleration, which depends on both force and mass according to Newton's second law.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Recommended textbooks for you
College Physics
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
Physics for Scientists and Engineers
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:
9780321820464
Author:
Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:
Addison-Wesley
College Physics: A Strategic Approach (4th Editio…
College Physics: A Strategic Approach (4th Editio…
Physics
ISBN:
9780134609034
Author:
Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:
PEARSON